JP2008020161A - Ventilation system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provided a ventilation system capable of carrying out ventilation in interlock with an operating condition of a portable type cooking means. <P>SOLUTION: A weight sensor of the portable type cooking means such as a charcoal brazier is comprised by providing an upper box allowing mounting of the cooking means on its top face, a lower box capable of interfitting with the upper box, a compression spring provided in the lower box to energize the upper box upward, and a microswitch generating a charcoal brazier detection signal when the cooking means is mounted on the upper box and the upper box sinks downward. When a charcoal brazier or the like is mounted on the weight sensor, operation of a ventilator is carried out in interlock with the charcoal brazier detection signal. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a ventilation system in which a ventilator is operated in conjunction with use of a cooking device.

For example, in a yakiniku restaurant, a hood (ventilator) for sucking and exhausting smoke etc. is installed on the gas stove of each table. A system that controls the operation of the ventilator in conjunction with the system is used. Specifically, when the detection unit that detects the supply of fuel such as gas detects the fuel supply, the data is transmitted to the control unit of the ventilator, and the control unit operates the ventilator based on the data. There is a system to let you. Alternatively, a system for controlling a ventilator based on the operating state of a combustion device such as a gas stove has been proposed.
JP 2002-39582 A JP 2002-61908 A

  By the way, in order to provide more delicious grilled meat, recently, an increasing number of shops use seven wheels instead of gas stoves. However, unlike conventional combustion equipment such as a gas stove, the seven wheels are difficult to detect the fuel supply status, and there are no switches that turn on and off during use, so the store clerk carries the seven wheels from the kitchen to the audience seats. You must manually turn on / off the ventilator when lowering from the kitchen to the kitchen. However, it was inconvenient that manual operation was unavoidable forgetting to turn on or forgetting to turn it off.

  The present invention has been completed based on the above circumstances, and even when using a portable heating cooking means different from a built-in gas stove, etc., It aims at providing the ventilation system which can ventilate in conjunction.

  As means for achieving the above object, the invention of claim 1 comprises a ventilator for ventilating indoor air and a detection device for detecting use of heating cooking means installed indoors, When the use of the cooking device is detected by the detection device, the ventilation system operates the ventilation device in conjunction with the detection signal, and the detection device places the cooking device on the upper surface thereof. An upper box that can be placed, a lower box that can be fitted to the upper box, a compression spring that is provided in the lower box and biases the upper box upward, and the heating cooking means is mounted on the upper box. And a switching means for generating the detection signal when the upper box sinks downward.

  According to a second aspect of the present invention, in the one according to the first aspect, one of the lower box and the upper box is provided with a guide pin extending toward the other side, and the other is provided with the guide pin. A fitting cylinder that can be fitted therein is provided, and the compression spring is characterized in that it is installed on the outer periphery of the fitting cylinder.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, a stopper protrusion protruding in the lateral direction is provided on one side wall of the upper box and the lower box, and the other side The side wall is characterized in that a guide hole extending in the vertical direction with a predetermined length is formed to allow the stopper protrusion to move in the vertical direction.

  According to a fourth aspect of the present invention, in the first aspect, the exhaust fan of the ventilation device is configured to be a variable capacity type by an inverter drive, and is mounted on the detection device. When it is detected by the detection device that the cooking means that has been removed has been removed, the exhaust passage corresponding to the detection device is closed and the exhaust capacity of the exhaust fan is reduced.

  According to a fifth aspect of the present invention, in the apparatus according to any one of the first to fourth aspects, the exhaust fan of the ventilation device is configured to be a variable capacity type by an inverter drive, and the detection device includes a plurality of detection devices. An exhaust path corresponding to each detection device is installed and configured to be openable and closable, and the exhaust capacity of the exhaust fan is determined according to the number of the detection devices that detect that the heating cooking means is placed. However, it has characteristics.

<Invention of Claim 1>
According to the first aspect of the present invention, the effect is exhibited when the cooking device is portable, such as a seven wheel. That is, when the heating cooking means is placed on the upper box of the detection device, the upper box sinks downward due to its weight, and thereby the switching means is operated to output a detection signal. When this detection signal is sensed by the control unit of the ventilator, the operation of the ventilator is started. In addition, when the cooking device is used and removed from the upper box of the detection device, the upper box is pushed back upward by the urging of the compression spring, and the switching means is actuated again. The operation of the device can be stopped.

  Thus, according to the ventilation system of the present invention, the use status of the heating cooking means is determined depending on whether the cooking device is placed on the detection device, and the ventilation device is operated according to the usage status. Can be controlled.

<Invention of Claim 2>
According to the second aspect of the present invention, the guide pin provided on one side of the lower box and the upper box and the fitting cylinder provided on the other side are fitted, and the compression spring is installed on the outer periphery thereof. Therefore, the upper box and the lower box are not easily displaced and are in a stable fitting state, and the compression spring is in a stable installation state without falling or rolling in the box.

<Invention of Claim 3>
According to the third aspect of the present invention, since the vertical movement of the stopper projection is permitted and restricted by the guide hole, the compression spring is compressed more than necessary, or the upper box and the lower box are not prepared. Will not be separated.

<Invention of Claim 4>
Furthermore, when a plurality of cooking devices are used, if the detection device detects that any of the cooking devices has been removed from the detection device, the exhaust fan's exhaust capability will be reduced. It is possible to prevent the exhaust amount corresponding to the cooking device from changing suddenly.

<Invention of Claim 5>
When a plurality of heating cooking means are used, the exhaust capacity can be determined according to the number of the cooking cooking means. Therefore, even if the number of heating cooking means used is changed, an appropriate exhaust amount is always maintained. be able to.

  An embodiment of the invention will be described with reference to FIGS. FIG. 1 shows an example of a ventilation system according to the present invention. For example, a ventilation hood 11 is provided above each table 10 disposed in a yakiniku restaurant. Each hood 11 is connected to a common exhaust duct 13 via a branch duct 12, and the exhaust capacity is made variable by controlling the motor rotation speed by an inverter 30 described later at the outlet of the exhaust duct 13. An exhaust fan 14 is provided. A motor damper 15 is provided in the middle of the branch duct 12 so that the exhaust path can be opened and closed for each table 10. These dampers 15 are controlled to be opened and closed by a damper control device 32 described later.

  On the other hand, the central part of each table 10 is formed to be recessed in a concave shape, and the detection device 20 of the present embodiment is installed here. As shown in FIG. 2, the detection device 20 includes a flat rectangular lower box 21 made of stainless steel and having an open upper surface, a stainless upper box 22 that can be fitted to the lower box 21 from the upper outer peripheral side, And a compression spring 23 installed inside the lower box 21 and the upper box 22. More specifically, guide pins 24 extending upward from the bottom surface of the lower box 21 are provided in the vicinity of four corners on the diagonal line of the bottom surface (see FIG. 4), and from the lower surface of the upper box 22, When a fitting cylinder 25 capable of fitting the guide pin 24 therein is provided at a position corresponding to the guide pin 24 so as to open downward, and the upper box 22 and the lower box 21 are fitted. The fitting cylinder 25 is fitted to the outside of the guide pin 24. The compression spring 23 is fitted and installed on the outer side of each of the fitting cylinders 25 (a part of the guide pins 24), and urges the upper box 22 upward from its lower surface side. The guide pin 24 and the fitting cylinder 25 have a length that leaves a margin between the upper end of the guide pin 24 and the upper end of the fitting cylinder 25 with the compression spring 23 attached, It is designed in advance so that the length does not come off.

  Stopper bolts 26 extending toward the side walls of the lower box 21 are provided on the side walls of the upper box 22 at the center of each side wall. A vertically long guide hole 27 that allows and restricts movement in a direction between a predetermined length is formed.

  Further, a micro switch 28 (switching means of the present invention) is installed in the center of the lower box 21. The micro switch 28 is configured to output a seven-wheel detection signal, for example, when the pressure is received from above, the switch is turned on.

  As shown in FIG. 1, the seven-wheel detection signal from the micro switch 28 is configured to be output to the damper control device 31, and when the damper control device 31 receives the seven-wheel detection signal from any of the tables 10. Is set to open the damper 15 of the table 10 while transmitting a motor start signal to the exhaust fan control device 32. Further, when the seven-wheel detection signal is not output in any of the tables 10, the damper 15 of the table 10 is closed.

  On the other hand, when the exhaust fan control device 32 receives the motor start signal from the damper control device 31, it outputs a drive signal to the inverter 30 to operate the exhaust fan 14. At this time, the exhaust fan control device 32 determines the rotational speed of the exhaust fan 14 in accordance with the number of received seven-wheel detection signals, that is, the number of micro switches 28 that are turned on, and the rotational speed information is also combined with the inverter. Output to 30.

  In the ventilation system configured as described above, for example, when the seven wheels S filled with ignited charcoal are placed on the upper surface of the detection device 20 in the center of the table 10, the upper box 22 of the detection device 20 sinks downward due to the weight of the seven wheels S. The lower surface of the upper box 22 turns on the microswitch 28 in the detection device 20 (see FIG. 3). Accordingly, a seven wheel detection signal is transmitted from the micro switch 28, and the damper control device 31 receives this signal, thereby opening the damper 15 corresponding to the table 10 on which the seven wheels S are placed. On the other hand, the motor control signal is output from the damper control device 31 to the exhaust fan control device 32, and the exhaust fan 14 is driven based on this signal.

  In addition, when the seven wheels S are similarly placed on the other table 10, the seven wheel detection signal is output from the detection device 20 provided on the table 10, and therefore the table 10 on which the seven wheels S are placed. The number of revolutions of the exhaust fan 14 is increased corresponding to the number of the airflows, and the air volume is increased. As a result, the displacement of the hood 11 in each table 10 can be kept substantially constant.

  On the other hand, when the seven wheels S are removed from the top of the detection device 20 in a certain table 10, the upper box 22 is pushed back upward by the urging force of the compression spring 23, and the microswitch 28 is turned off. The detection signal is stopped. Along with this, the damper control device 31 closes the damper 15 at that position.

  Since it takes some time to complete this closing operation, in this embodiment, when two-thirds of the time required from the start of the closing operation of the damper 15 (disappearance of the seven wheel detection signal) to the closing completion has passed, A command to reduce the rotational speed of the exhaust fan 14 is output from the exhaust fan control device 32 to the inverter 30, and the rotational speed of the exhaust fan 14 is gradually decreased. By doing so, the exhaust amount in the hood 11 of the other table 10 can be kept substantially constant without causing a sudden change. If the exhaust operation is already stopped in the hoods 11 of the other tables 10, the damper 15 may be closed and the exhaust fan 14 may be stopped immediately when the seven-wheel detection signal is not output.

  As described above, according to the ventilation system of this embodiment, for example, it is difficult to detect the use state of the fuel such as the seven wheels, or the portable type that is difficult to determine the operation state such as the transportable gas stove. Even when using a heating cooker, it is possible to determine the usage status of the heating cooking means depending on whether the cooking device is placed on the detection device, and to control the operation of the ventilation device according to the usage status. it can.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention, and further, within the scope not departing from the gist of the invention other than the following. Various modifications can be made.

  (1) An air supply device may be provided in the ventilation system of the above embodiment.

  (2) In the above embodiment, the tamper is closed as soon as the seven-wheel detection signal is stopped. However, the tamper may be closed after a certain time.

  (3) The heating cooking means is not limited to seven wheels, and may be used for, for example, a cassette stove or a hot plate.

The block diagram which shows the structure of the ventilation system of one Embodiment of this invention. Similarly, a longitudinal section of the weight sensing device Similarly, a longitudinal section when seven wheels are mounted on the weight sensing device Similarly, a plan view of the weight sensing device

Explanation of symbols

14 ... Exhaust fan (ventilator)
DESCRIPTION OF SYMBOLS 20 ... Detection apparatus 21 ... Lower box 22 ... Upper box 23 ... Compression spring 24 ... Guide pin 25 ... Fitting cylinder 26 ... Stopper protrusion 27 ... Guide hole 28 ... Micro switch (switching means)
S ... Seven wheels (heating cooking means)

Claims (5)

A ventilation device for ventilating indoor air, and a detection device for detecting the use of heating cooking means installed in the room, the detection signal when the detection device detects the use of the heating cooking means In the ventilation system in which the ventilation device is operated in conjunction with
The detection device is provided in an upper box capable of placing the cooking device on the upper surface thereof, a lower box fitable with the upper box, and urges the upper box upward. A ventilation system comprising: a compression spring; and switching means for generating the detection signal when the cooking device is placed on the upper box and the upper box sinks downward. One of the lower box and the upper box is provided with a guide pin extending toward the other side, and the other is provided with a fitting cylinder in which the guide pin can be fitted. The ventilation system according to claim 1, wherein the spring is installed on an outer periphery of the fitting cylinder. One side wall of the upper box and the lower box is provided with a laterally protruding stopper protrusion, and the other side wall has a predetermined length to allow the stopper protrusion to move in the vertical direction. The ventilation system according to claim 1 or 2, wherein a guide hole extending vertically is formed. The exhaust fan of the ventilator is configured in a variable capacity type by inverter drive, and when the detection device detects that the heating cooking means placed on the detection device has been removed, the detection The ventilation system according to any one of claims 1 to 3, wherein an exhaust passage corresponding to the device is closed and an exhaust capability of the exhaust fan is reduced. The exhaust fan of the ventilator is configured in a variable capacity type by inverter drive, and a plurality of the detection devices are installed, and an exhaust path corresponding to each detection device is configured to be openable and closable. The ventilation system according to any one of claims 1 to 4, wherein the ventilation system is determined according to the number of the detection devices that detect that the heating cooking unit is placed.

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